1 /*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)libkern.h 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/sys/libkern.h,v 1.20.2.2 2001/09/30 21:12:54 luigi Exp $
31 */
32
33 #ifndef _SYS_LIBKERN_H_
34 #define _SYS_LIBKERN_H_
35
36 #if !defined(_KERNEL)
37 #error "This file should not be included by userland programs."
38 #endif
39
40 /*
41 * Hacks to prevent conflicts with standard header files
42 */
43
44 #ifndef _SYS_CDEFS_H_
45 #include <sys/cdefs.h>
46 #endif
47 #ifndef _SYS_TYPES_H_
48 #include <sys/types.h>
49 #endif
50 #ifndef _SYS_SYSTM_H_
51 #include <sys/systm.h>
52 #endif
53
54 /* BCD conversions. */
55 extern u_char const bcd2bin_data[];
56 extern u_char const bin2bcd_data[];
57 extern char const hex2ascii_data[];
58
59 #define bcd2bin(bcd) (bcd2bin_data[bcd])
60 #define bin2bcd(bin) (bin2bcd_data[bin])
61 #define hex2ascii(hex) (hex2ascii_data[hex])
62
63 /*
64 * Number of bytes needed for hexadecimal representation
65 * plus trailing \0
66 */
67 #define HEX_NCPYLEN(s) (s * 3)
68
imax(int a,int b)69 static __inline int imax(int a, int b) { return (a > b ? a : b); }
imin(int a,int b)70 static __inline int imin(int a, int b) { return (a < b ? a : b); }
lmax(long a,long b)71 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
lmin(long a,long b)72 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
umax(u_int a,u_int b)73 static __inline u_int umax(u_int a, u_int b) { return (a > b ? a : b); }
umin(u_int a,u_int b)74 static __inline u_int umin(u_int a, u_int b) { return (a < b ? a : b); }
max(u_int a,u_int b)75 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
min(u_int a,u_int b)76 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
qmax(quad_t a,quad_t b)77 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
qmin(quad_t a,quad_t b)78 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
ulmax(u_long a,u_long b)79 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
ulmin(u_long a,u_long b)80 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
u64max(u_int64_t a,u_int64_t b)81 static __inline u_int64_t u64max(u_int64_t a, u_int64_t b) { return (a > b ? a : b); }
u64min(u_int64_t a,u_int64_t b)82 static __inline u_int64_t u64min(u_int64_t a, u_int64_t b) { return (a < b ? a : b); }
i64max(int64_t a,int64_t b)83 static __inline int64_t i64max(int64_t a, int64_t b) { return (a > b ? a : b); }
i64min(int64_t a,int64_t b)84 static __inline int64_t i64min(int64_t a, int64_t b) { return (a < b ? a : b); }
szmax(size_t a,size_t b)85 static __inline size_t szmax(size_t a, size_t b) { return (a > b ? a : b); }
szmin(size_t a,size_t b)86 static __inline size_t szmin(size_t a, size_t b) { return (a < b ? a : b); }
87
abs(int a)88 static __inline int abs(int a) { return (a < 0 ? -a : a); }
labs(long a)89 static __inline long labs(long a) { return (a < 0 ? -a : a); }
qabs(quad_t a)90 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); }
91
92 /* Prototypes for non-quad routines. */
93 uint32_t karc4random(void);
94 uint64_t karc4random64(void);
95 uint32_t karc4random_uniform(uint32_t upper_bound);
96 void karc4random_buf(void *, size_t);
97 void arc4_init_pcpu(int cpuid);
98 int bcmp(const void *, const void *, size_t);
99 int timingsafe_bcmp(const void *, const void *, size_t);
100 void *kbsearch(const void *, const void *, size_t,
101 size_t, int (*)(const void *, const void *));
102 #ifndef HAVE_INLINE_FFS
103 int ffs(int);
104 #endif
105 #ifndef HAVE_INLINE_FFSL
106 int ffsl(long);
107 #endif
108 #ifndef HAVE_INLINE_FLS
109 int fls(int);
110 #endif
111 #ifndef HAVE_INLINE_FLSL
112 int flsl(long);
113 #endif
114 #ifndef HAVE_INLINE_FLSLL
115 int flsll(long long);
116 #endif
117 void kqsort(void *base, size_t nmemb, size_t size,
118 int (*compar)(const void *, const void *));
119 void kqsort_r(void *base, size_t nmemb, size_t size, void *thunk,
120 int (*compar)(void *, const void *, const void *));
121 u_long krandom(void);
122 char *index(const char *, int);
123 char *rindex(const char *, int);
124 int scanc(u_int, const u_char *, const u_char *, int);
125 int skpc(int, int, char *);
126 void skrandom(u_long);
127 char *strcat(char * __restrict, const char * __restrict);
128 char *strncat(char * __restrict, const char * __restrict, size_t);
129 int strcmp(const char *, const char *);
130 int strcasecmp(const char *, const char *);
131 char *strcpy(char * __restrict, const char * __restrict);
132 size_t strlcat(char *, const char *, size_t);
133 size_t strlcpy(char *, const char *, size_t);
134 size_t strlen(const char *);
135 int strncmp(const char *, const char *, size_t);
136 int strncasecmp(const char *, const char *, size_t);
137 char *strncpy(char * __restrict, const char * __restrict, size_t);
138 size_t strnlen(const char *, size_t);
139 char *strsep(char **, const char *);
140 char *strstr(const char *, const char *);
141 int _kfnmatch(const char *, const char *, int, int);
142 void *memcchr(const void *, int, size_t);
143 char *hexncpy(const u_char *, int, char *, int, const char *);
144
145 /*
146 * memset can't be an inline, it is used by gcc-4.x directly.
147 */
148 /*void *memset(void *, int, size_t);*/
149 /*void *memmove(void *, const void *, size_t);*/
150
151
152 static __inline int
kfnmatch(const char * pattern,const char * string,int flags)153 kfnmatch(const char *pattern, const char *string, int flags)
154 {
155 return(_kfnmatch(pattern, string, flags, 0));
156 }
157
158 static __inline int
memcmp(const void * b1,const void * b2,size_t len)159 memcmp(const void *b1, const void *b2, size_t len)
160 {
161 return (bcmp(b1, b2, len));
162 }
163
164 static __inline char *
strchr(const char * p,int ch)165 strchr(const char *p, int ch)
166 {
167 return (index(p, ch));
168 }
169
170 static __inline char *
strrchr(const char * p,int ch)171 strrchr(const char *p, int ch)
172 {
173 return (rindex(p, ch));
174 }
175
176 /* kfnmatch() return values. */
177 #define FNM_NOMATCH 1 /* Match failed. */
178
179 /* kfnmatch() flags. */
180 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */
181 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */
182 #define FNM_PERIOD 0x04 /* Period must be matched by period. */
183 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */
184 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */
185 #define FNM_IGNORECASE FNM_CASEFOLD
186 #define FNM_FILE_NAME FNM_PATHNAME
187
188 #endif /* !_SYS_LIBKERN_H_ */
189